Robust radio link monitoring framework for unlicensed spectrum

A method of wireless communication, comprising:

• transmitting, by a base station, radio link monitoring (RLM) configuration information to one or more served UEs, wherein the RLM configuration information includes a set of default RLM resources associated with a connected state of the one or more served UEs and a set of additional RLM resources associated with one or more pre-defined criteria;
• monitoring, by the base station, for the one or more pre-defined criteria over a first predetermined time;
• scheduling, by the base station, transmission of additional RLM reference signals (RLM-RS) using the set of additional RLM resources in response to detection of a pre-defined criteria of the one or more pre-defined criteria within the first predetermined time;
• monitoring, by the base station after the scheduling, for one or more pre-defined recovery criteria over a second predetermined time;
• and
• ceasing, by the base station, the scheduling in response to detection of one or more pre-defined recovery criteria within the second predetermined time.

A method of wireless communication, comprising:

• receiving, at a user equipment (UE), radio link monitoring (RLM) configuration information including a set of default RLM resources associated with a connected state of the UE;
• monitoring, by the UE, the set of default RLM resources for a default RLM reference signal (RLM-RS) from a serving base station during the connected state;
• transmitting, by the UE, a failure report to the serving base station in response to detection of one or more pre-defined failure criteria associated with a failure of the UE to receive the default RLM-RS;
• monitoring, by the UE, for one or more pre-defined recovery criteria associated with acceptable link quality between the UE and the serving base station;
• and
• transmitting, by the UE, a recovery report to the serving base station in response to detection of the one or more pre-defined recovery criteria.

A method of wireless communication, comprising:

• transmitting, by a base station, radio link monitoring (RLM) configuration information to one or more served user equipments (UEs), wherein the RLM configuration information includes a set of default RLM resources associated with a connected state of the one or more served UEs;
• receiving, by the base station, a failure report from the one or more served UEs, wherein the failure report is associated with a failure of the one or more served UEs to receive a default RLM reference signal (RLM-RS) transmitted by the base station;
• and
• receiving, by the base station, a recovery report from the one or more served UEs, wherein the recovery report is associated with an acceptable link quality between the one or more served UEs and the serving base station.